Graphite cast bronze bearings are a type of self-lubricating
bearing that incorporates solid bronze plates with graphite plugs
to achieve the self-lubricating property. Here's how the
self-lubrication is realized in these bearings:
Material Composition: The bearing is made from a bronze alloy which is known for its
good wear resistance and strength. The bronze is cast with graphite
plugs that serve as a source of solid lubrication.
Graphite as a Lubricant: Graphite is a solid lubricant that has a natural ability to reduce
friction between sliding surfaces. When the bearing is in motion,
the graphite within the bronze matrix transfers to the contact
surfaces, creating a thin, low-friction film that helps to reduce
wear.
Initial Break-In Period: During the initial operation of the bearing, there is a break-in
period where the transfer of material from the bearing to the
mating surface occurs. This is a critical step in establishing the
self-lubricating film on the contact surfaces.
Ongoing Transfer Process: After the initial break-in, the transfer process continues
dynamically throughout the operational life of the bearing. The
graphite continues to be transferred to the mating surface,
maintaining a lubricating film that reduces friction and wear.
Maintenance-Free Operation: Unlike bearings that require regular application of external
lubricants, graphite cast bronze bearings are designed to be
maintenance-free. The graphite within the bronze provides a
long-lasting source of lubrication, reducing the need for
maintenance and extending the service life of the bearing.
Suitability for Various Applications: Due to their self-lubricating nature, graphite cast bronze
bearings are suitable for applications where regular maintenance is
difficult or where the environment is harsh, such as in high
temperatures, contaminated conditions, or where there is a need for
a dry-running system.
In summary, the self-lubrication in graphite cast bronze bearings
is achieved through the use of graphite as a solid lubricant within
the bronze matrix. This combination allows for a continuous
transfer of lubricant to the contact surfaces, ensuring reduced
friction, wear, and the need for maintenance.
Wear Plates - Metric size wear plates are made to the
standard,Thickness Width Length Material CAD Add to Quote
Available in the following configurations:
·Bronze w/Graphite
·Bronze no Graphite
·Bronze w/Grease Grooves
·Steel w/Graphite
Wear Plates Bronze Wear Plates - Metric - Self Lube Mold and Die
Products
How Bronze Bearing Graphite Graphite realizing the
self-lubrication?
Solid Bronze Metallic Self-lubricating Spacer Plug Graphite Cast
Bronze Bearing Solid Bronze Plate C86300 | VSB-50P
FunctionaI in absence of oiI BRONZE GRAPHITE BUSHINGS Straight
Bushings the can be used in circumstances where oiling and greasing
is difficult or impossible and they perform excellent Iubrication
even under low-speed and high Ioad circumstances.
Since the Iinear expansibility of solid Iubricant is greater than metallic
matrix's, when the movement of solid lubricant bearings(VIIPLUS SLIDING
BEARING BRONZE GRAPHITE BUSHINGS)start, the Iubricant is
transferred onto the parts in abrasion thus realizing the
self-lubrication.
CHARACTERISTICS
VSB-50P PLATE olid Bronze Metallic Self-lubricating Bearings
Solid Lubricant Cast Bronze Bearings Silde Block With Immediate
Running Velocity
Metric Bronze Bushings Block Tin-Bronze For Metallurgy / Drying
Machine
Cast Bronze Bearing with Graphite Plugs
VSB-50P Sliding PLATE
Copper Cast Bronze Bearings Slide Block Anti Abrasion For
Transportation Machines
1. May work without any ol for long period
2. Extremely high load capacity, good anti-wear and lower friction
3. Particularly appropriate for low speed and high load
4. Suitable for reciprocating, oscillation or intermittent motion
where oil film is hard to be formed
5. Good chemical resistant and anti-corrosion characteristics
6. Can b€ used in wide range of temperature from -40℃-+300℃
Aluminum-Bronze With Solid Lubricant Casting Bronze Silde Block
Aluminum-Bronze Solid Lubricating Silde Block is backed with
Aluminum-Bronze alloy with good capability of mechanics, castings
and anti-erosion. The surface of Aluminum-Bronze Solid Lubricating
Silde Block is regularly and finely machined with sockets in which
particular solid lubricant is filled.
Aluminum-Bronze Solid Lubricating Silde Block is widely used conditions with mediate load but higher temperature
and condition with mediate running velocity etc.
The surface of Aluminum-Bronze Solid Lubricating Silde Block is regularly and finely machined with sockets in which particular
solid lubricant is filled.
STRUSTURE
VSB-50W WASHER material is made of strong cast bronze based metal with special solid lubricants embedded. The base metal withstands high load and the solid
lubricants provide self-lubrication. The bearing shows excellent
performance without pre-lubrication under conditions of extreme
high/low temperature with low speed. This material provides a
maintenance-free bearing solution, particularly for high load,
intermittent of oscillating motion.
Grade | 50# | 50S1 | 50S2 | 50S3 | 650S5 |
Material | CuZn25AI5Mn4Fe3 | CuSn5Pb5Zn5 | CuAI10Ni5Fe5 | CuSn12 | CuZn25AI5Mn4Fe3 |
Density | 8 | 8.9 | 7.8 | 8.9 | 8 |
Hardness | ≥210 | ≥70 | ≥150 | ≥75 | ≥235 |
Tensile strength | ≥750 | ≥250 | ≥500 | ≥270 | ≥800 |
Yield strength | ≥450 | ≥90 | ≥260 | ≥150 | ≥450 |
Elongation | ≥12 | ≥13 | ≥10 | ≥5 | ≥8 |
Coefficient o linear expansion | 1.9×10-5/℃ | 1.8×10-5/℃ | 1.6×10-5/℃ | 1.8×10-5/℃ | 1.9×10-5/℃ |
Max.Temp. | -40~+300℃ | -40~+400℃ | -40~+400℃ | -40~+400℃ | -40~+300℃ |
Max.dynamic load | 100 | 60 | 50 | 70 | 120 |
Max.speed(Dry) | 15 | 10 | 20 | 10 | 15 |
N/mm²*m/s(Lubrication) | 200 | 60 | 60 | 80 | 200 |
Compression deformation | < 0.01 mm | < 0.05mm | < 0.04mm | < 0.05mm | < 0.005mm |
Chemical Compositions
Product NO. | Chemical Compositions |
VSB-50 | Cu | Zn | Al | Fe | Mn | Si | Ni | Sn | Pb |
60~66 | 22~28 | 5.0~8.0 | 2.0~4.0 | 2.5~5.0 | <0.1 | <0.5 | <0.2 | <0.2 |
AVAILABILITY
Bearing forms available in standard dimensions
· Cylindrical bushes
· Flanged bushes
· Sliding plates
Bearing forms made to order: standard forms in special dimensions,
thrust washers, flanged thrust washers, half-bearings, special
shapes obtained by stamping or deep drawing, customized bearing
designs
This kind of bearing can be applied under dry, high temperature,
high pressure, corrosive, water or other chemical environments when
no oil can be introduced. It is widely used in automotive products
line, water engineering, dam gate, plastic industries, successive
casting machines, steel rollers in metallurgy industry, mineral
machines, ships, turbo generators, hydraulic turbines and injection
molding machines...